#24 Wladimir Klitschko

Total earnings: $28 million
Salary/winnings: $24 million
Endorsements: $4 million

Klitschko has been the world’s most dominant heavyweight since 2005, reeling off 15 straight wins. Klitschko and his brother Vitali currently hold all of the heavyweight titles. Wladimir recently auctioned off his 1996 Olympic gold medal for charity. The winner bid $1 million, but returned the medal to Klitschko because he wanted it to stay in his family.